The Multiquip 6,000 watts portable generator has 100% copper windings for maximum conductivity. Its design that eliminates maintenance by removing brushes and slip rings. Heavy-duty 1-inch (25 mm) steel pipe frame and shock mounts. These MQ Power generators use technology to control the voltage with a voltage variation less than 3% throughout the entire power range. That means you can use this generator with computers and sensitive electronics, safely, with no sacrifice in performance. These portable generators are powerful enough to run basic power tools as well as air compressors, submersible pumps and worm-drive circular saws.